Build quality is excellent. I have yet to have a rifle-related malfunction (ammo and mag malfunctions obviously happen on any rifle) of any kind in over 8000 rounds, which I consider pretty amazing. No internal parts have been replaced, and even after 8000 rounds none appear to be worn anywhere near replacement. I figured I will break some bolt parts and other small parts eventually, so I have them on hand.
I have been at VERY muddy rifle courses where lots of ARs went down (Noveskes included), but my ACR didnt miss a beat. When I say muddy, I mean it.
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